G303 Brownian Dynamics Simulations of Colloidal Dispersion composed of Ferromagnetic Spherocylinder Particles in a Simple Shear Flow : 1st Report, For the case of Simple Shear Flow in a Magnetic Field Perpendicular to a Shearing Plane

Abstract

We have investigated aggregate structures and rheological properties of a colloidal dispersion composed of ferromagnetic spherocylinder particles with a magnetic moment along the particle axis direction, by means of Brownian dynamics simulations. In concrete, we have attempted to clarify the influences of the flow field, magnetic field strength, magnetic interactions between particles and volumetric fraction of particles. For the case of a strong magnetic field and strong magnetic interactions between particles, wall-like clusters are formed along the magnetic field direction. As the influence of the flow field increases from such a situation, those clusters dissociate, and the particles are tilted to the flow direction.